This 12 square meter sharpie was skippered by Jim White. In this photo, it's at the Mordialloc Wooden Boat Festival in 1960.
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This 12 square meter sharpie was manned by Paul Bert Elvstrom. This photo was taken in 1952, but the location is uncertain. This photo was most likely taken at the 1952 Olympics.
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These two ships were manned by New Zealand (left) and Rolly Tasker (KA2 ) in the 1956 Melbourne Olympics.
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These three 12 square meter yachts were manned by Nikhi, Kannibaltje, and Romolo at the 1956 Olympic Games.
http://www.sailing.org/olympics/london2012/about/history/melbourne_Stockholm_1956.php